Analysis of Mechanical Forces Used During Laparoscopic Training Procedures

Area of Science:

• Surgical Technology
• Biomechanics
• Medical Training

Background:

• Laparoscopic surgery requires precise tissue manipulation.
• Quantifying forces applied by surgeons is crucial for understanding tissue trauma.
• Surgeon experience is hypothesized to influence applied mechanical forces.

Purpose of the Study:

• To evaluate the relationship between surgeon experience and mechanical forces applied during laparoscopic procedures.
• To investigate if applied forces can serve as an objective measure of surgical skill.

Main Methods:

• 34 participants (novice, intermediate, expert) performed standardized tasks using force-sensing laparoscopic graspers.
• Ex vivo porcine ureter grasping tasks were conducted with dominant and non-dominant hands.
• Peak force (Fmax) and mean force (Frms) were recorded and analyzed.

Main Results:

• A strong correlation was found between peak and mean forces (r=0.97, p<0.0005).
• Experienced surgeons applied significantly lower mechanical forces compared to novices (p<0.0005).
• Hand dominance influenced force application differently across experience levels.

Conclusions:

• Surgeon training level is directly related to the mechanical forces exerted on tissues.
• Objective force measurement has potential for assessing surgical proficiency and identifying training needs.
• Further research is warranted to establish force application as a definitive metric for surgical skill.